9,9-Bis[4-(1-pyrenyl)phenyl]fluorene is widely used in materials science, particularly in the electronics and lighting industries, due to its excellent luminescent properties, electrical conductivity, and optoelectronic characteristics. It serves as a key component in organic light-emitting diodes (OLEDs), enhancing light emission efficiency, device stability, and brightness in the emissive layer. Additionally, it is applied in organic photovoltaics (OPVs) to improve light-to-electricity conversion efficiency, owing to its molecular structure that facilitates light absorption and charge transfer. It is also utilized in advanced optoelectronic devices such as sensors and displays, and its ability to form thin films makes it suitable for flexible and lightweight electronic components.